Tear openable catheter assembly

Abstract

A medical device assembly is disclosed, comprising a medical device, such as a urinary catheter, and preferably having a hydrophilic surface coating, and a package forming a closed compartment around the catheter. The package is formed of at least one sheet of tearable material and comprises a first weld extending along a first side in a first direction of the package and a second weld extending along a second side in a second direction of the package. The first and second directions are different and preferably orthogonal to each other. A tear line is provided in the second weld, and arranged to direct a subsequent tear towards the first weld. Further, the first weld is provided with an inward protrusion, protruding inwardly towards the closed compartment, at a distance from the second weld. A corresponding method of production is also disclosed.

The invention claimed is: 
     
       1. A medical device assembly comprising a medical device and a package including a closed compartment accommodating said medical device, wherein the package is formed of at least one sheet of tearable material and comprising a first weld extending along a first side in a first direction of the package and a second weld extending along a second side in a second direction of the package, said first and second directions being different, wherein a tear line is provided in said second weld, the tear line being arranged to direct a subsequent tear towards the first weld, and wherein the first weld is provided with an inward protrusion, protruding inwardly towards said closed compartment, at a distance from said second weld, wherein the first weld is formed with two or more weld portions having different widths, a first weld portion of the first weld being arranged between the second weld and the inward protrusion and having a lower width than a second weld portion of the first weld forming said inward protrusion, and wherein a transition weld portion is provided between said first weld portion and said second weld portion, the transition weld portion providing a gradual transition between the width of the first weld portion and the width of the second weld portion. 
     
     
       2. The medical device of  claim 1 , wherein the medical device includes a hydrophilic surface coating or is formed of a hydrophilic material. 
     
     
       3. The medical device of  claim 1 , wherein the first and second directions are orthogonal to each other. 
     
     
       4. The medical device assembly of  claim 1 , wherein at least a part of the tear line being closest to the inward protrusion is arranged in a slanted disposition relative to the first direction of the package. 
     
     
       5. The medical device assembly of  claim 4 , wherein the slanted disposition of the tear line or a part of the tear line forms an angle relative to the first direction of the package in the range of 10 to 60 degrees. 
     
     
       6. The medical device assembly of  claim 4 , wherein the slanted disposition of the tear line or a part of the tear line forms an angle relative to the first direction of the package in the range of 15 to 45 degrees. 
     
     
       7. The medical device assembly of  claim 4 , wherein the slanted disposition of the tear line or a part of the tear line forms an angle relative to the first direction of the package in the range of 20 to 35 degrees. 
     
     
       8. The medical device assembly of  claim 1 , wherein the tear line is arranged distant from both ends of the second weld. 
     
     
       9. A medical device assembly comprising a medical device and a package including a closed compartment accommodating said medical device, wherein the package is formed of at least one sheet of tearable material and comprising a first weld extending along a first side in a first direction of the package and a second weld extending along a second side in a second direction of the package, said first and second directions being different, wherein a tear line is provided in said second weld, the tear line being arranged to direct a subsequent tear towards the first weld, and wherein the first weld is provided with an inward protrusion, protruding inwardly towards said closed compartment, at a distance from said second weld, wherein a second tear line is provided in said first weld, said second tear line extending between a first position at the periphery of the first weld, and into the first weld in a direction towards the second weld, wherein the second tear line forms a first portion extending from said first position and into the first weld, a second portion extending generally in the first direction of the package, and a third portion extending in an inward direction. 
     
     
       10. The medical device assembly of  claim 9 , wherein the first weld is formed with two or more weld portions having different widths, a first weld portion of the first weld being arranged between the second weld and the inward protrusion and having a lower width than a second weld portion of the first weld forming said inward protrusion. 
     
     
       11. The medical device of  claim 10 , wherein a transition weld portion is provided between said first weld portion and said second weld portion, the transition weld portion providing a gradual transition between the width of the first weld portion and the width of the second weld portion. 
     
     
       12. A medical device assembly comprising a medical device and a package including a closed compartment accommodating said medical device, wherein the package is formed of at least one sheet of tearable material and comprising a first weld extending along a first side in a first direction of the package and a second weld extending along a second side in a second direction of the package, said first and second directions being different, wherein a tear line is provided in said second weld, the tear line being arranged to direct a subsequent tear towards the first weld, and wherein the first weld is provided with an inward protrusion, protruding inwardly towards said closed compartment, at a distance from said second weld, wherein a second tear line is provided in said first weld, said second tear line extending between a first position at the periphery of the first weld, and into the first weld in a direction towards the second weld, wherein the second tear line extends from the first position to a second position, said second position being farther from the second weld than said inward protrusion. 
     
     
       13. The medical device of  claim 9 , wherein the second tear line extends from the first position to a second position, said second position being farther from the second weld than said inward protrusion. 
     
     
       14. A medical device assembly comprising a medical device and a package including a closed compartment accommodating said medical device, wherein the package is formed of at least one sheet of tearable material and comprising a first weld extending along a first side in a first direction of the package and a second weld extending along a second side in a second direction of the package, said first and second directions being different, wherein a tear line is provided in said second weld, the tear line being arranged to direct a subsequent tear towards the first weld, and wherein the first weld is provided with an inward protrusion, protruding inwardly towards said closed compartment, at a distance from said second weld, wherein a second tear line is provided in said first weld, said second tear line extending between a first position at the periphery of the first weld, and into the first weld in a direction towards the second weld, wherein at least a part of the second tear line, starting from the first position, is a cut through line forming a gripping tab. 
     
     
       15. The medical device assembly of  claim 1 , wherein the medical device is a catheter. 
     
     
       16. The medical device assembly of  claim 1 , wherein the medical device is a urinary catheter. 
     
     
       17. The medical device assembly of  claim 1 , wherein the medical device is an intermittent use urinary catheter. 
     
     
       18. The medical device assembly of  claim 2 , wherein the assembly further comprises a wetting fluid for activation of said hydrophilic surface coating or said hydrophilic material, said wetting fluid being accommodated by said package. 
     
     
       19. The medical device assembly of  claim 18 , wherein the wetting fluid is in direct contact with the medical device, thereby maintaining the hydrophilic surface coating wetted during storage. 
     
     
       20. The medical device assembly of  claim 1 , wherein the sheet(s) comprises laminated sheet(s), having a weldable inner layer and a protective outer layer. 
     
     
       21. The medical device assembly of  claim 1 , wherein the medical device is a catheter. 
     
     
       22. The medical device assembly of  claim 9 , wherein the medical device is a urinary catheter. 
     
     
       23. The medical device assembly of  claim 12 , wherein the medical device is a catheter. 
     
     
       24. The medical device assembly of  claim 14 , wherein the medical device is a catheter.